Linear motor elevator with support wings for mounting secondary

Details Linear motor elevator with support wings for mounting secondary Linear motor elevator with support wings for mounting secondary

1991-05-08

1992-10-27

Olszewski, Robert P.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187112, 318135, B66B 1104

Patent

active

051581566

ABSTRACT:
A linear motor elevator includes permanent magnets 4 mounted on a pair of wing-shaped support members 21 secured on and projecting sideways from the right and the left side walls 3a of the elevator car 3. The polar axes of the permanent magnets 4 are arranged in the direction of the thickness of the support members 21, such that both the north and the south poles of the permanent magnets 4 are exposed on the front and the back surface of the support members 21 and hence are utilized effectively for producing driving force (thrust) for the elevator car 3. Each one of the right and the left side coils 20a and 20b of the primary side coils 20 for forming vertically translating magnetic field is bent at the middle to form two horizontally extending branches, such that the primary side coils 20 sandwich the permanent magnets 4 across predetermined gaps in the direction of polar axes of the permanent magnets 4, when the elevator car 3 passes by the primary side coils 20. Thus, the strong attractive force acting on the permanent magnets 4 from the primary side coils 20 does not act on the cage structure of the elevator car 3.

REFERENCES:
patent: 4779538 (1988-10-01), Fujiwara et al.
patent: 4839543 (1989-06-01), Beakley et al.
patent: 5033588 (1991-07-01), Nakai et al.

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